MD2-IN-1

Cell experiment:

Mouse RAW264.7 macrophages are starved for 3 h before experimentation. Cells are incubated with or without FITC-LPS (50 μg/mL) in the presence or absence of MD2-IN-1 (0.1, 1 and 10 μM) for 30 min. After incubation, macrophages are fixed with paraformaldehyde for 10 min at 4°C and washed with PBS before being analyzed by flow cytometry[1].

Animal experiment:

Male Sprague Dawley (SD) rats are randomly divided into three groups, designated “control” (5 rats, only receive the vehicle of 0.9% saline), “LPS” (7 rats, receive 5 mg/kg LPS alone) and “MD2-IN-1 (20) + LPS” (6 rats, receive both MD2-IN-1 and 5 mg/kg LPS). Prior to LPS-induced Acute lung injury (ALI), the MD2-IN-1+LPS group rats are treated intragastrically with MD2-IN-1 at a dosage of 20 mg/kg/day continuously for one week. Under ether anesthesia, all the rats are exposed their trachea and challenged with intratracheal instillation of 50 μL of LPS, while the control group challenged with intratracheal instillation of 50 μL of 0.9% saline. Rats are then euthanized with ketamine after 6 h of LPS induction[1].

References:

[1]. Zhang Y, et al. Discovery of new MD2 inhibitor from chalcone derivatives with anti-inflammatory effects in LPS-induced acute lung injury. Sci Rep. 2016 Apr 27;6:25130.